1. OpenShift MetalLB configuration documentation has an issue where it does not specify how to assign a single IP address in the IPAddressPool section. [1] 

   2. In metallb documentation [2], it is mentioned that a single IP address can be assigned using the /32 CIDR notation (e.g., 192.168.1.2/32), but this detail is missing in OpenShift metallb configuration documentation.


Either this can be added as a note :
~~~
To specify a single IP address in a pool, use /32 in the CIDR notation (e.g. 192.168.1.2/32).
~~~

Or, 

Can be added as part of example. 

~~~
apiVersion: metallb.io/v1beta1
kind: IPAddressPool
metadata:
  name: doc-example-single-ip
  namespace: metallb-system
spec:
  addresses:
  - 192.168.1.2/32
  - 192.168.1.21/32
  - 192.168.1.31/32
~~~

In the above example shows how to configure multiple specific IP's in IPAddressPool CR, instead of providing the complete network range. 


[1] https://docs.openshift.com/container-platform/4.18/networking/metallb/metallb-configure-address-pools.html#example-reserve-ip-addresses

[2] https://metallb.universe.tf/configuration/_advanced_ipaddresspool_configuration/

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